CompTIA CompTIA Certifications XK0-004 Questions & Answers

• Question 291:

  A junior systems administrator is upgrading a package that was installed on a Red Hat-based system. The administrator is tasked with the following:

  1.

  Update and install the new package.

  2.

  Verify the new package version is installed.

  Which of the following should be done to BEST accomplish these task? (Choose two.)

  A. yum install

  B. yum upgrade

  C. rpm -e

  D. rpm -qa

  E. apt-get

  F. apt-get upgrade

  Correct Answer: AD

  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/ deployment_guide/ch-yum

• Question 292:

  A junior administrator is migrating a virtual machine from a Type 1 hypervisor to a Type 2 hypervisor. To ensure portability, which of the following formats should the administrator export from the Type 1 hypervisor to ensure compatibility?

  A. OWASP

  B. VDI

  C. VMDK

  D. OVA

  Correct Answer: D

  Reference: https://docs.vmware.com/en/VMware-Fusion/11/com.vmware.fusion.using.doc/GUID- 16E390B1-829D-4289-8442-270A474C106A.html

• Question 293:

  Which of the following is the purpose of the monitoring server role?

  A. To aggregate web traffic to watch which websites employees are visiting

  B. To collect status and performance information about the servers in an environment

  C. To provide user authentication services to a network

  D. To provide real-time analysis of potential threats to the organization

  Correct Answer: B

• Question 294:

  Two specific users need access to a directory owned by root where backups are located. Which of the following commands would BEST ensure the specified users can access the backup files?

  A. umask

  B. chcon

  C. chmod

  D. setfacl

  Correct Answer: D

• Question 295:

  A systems administrator needs to retrieve specific fields from a CSV file. Which of the following tools would accomplish this task?

  A. awk

  B. sort

  C. print

  D. echo

  Correct Answer: A

  Reference: https://stackoverflow.com/questions/19602181/how-to-extract-one-column-of-a-csv-file

• Question 296:

  A junior Linux administrator is installing patches using YUM. The administrator issues the following command:

  yum list installed

  The output of the command is as follows:

  

  Given this scenario and the output, which of the following should the administrator do to address this issue?

  A. renice -n 9 -p 5180

  B. killall yum

  C. ps -ef | grep yum

  D. top | grep yum

  Correct Answer: C

  Reference: https://www.thegeekdiary.com/yum-command-fails-with-another-app-is-currently-holding-the- yum-lock-in-centos-rhel-7/

• Question 297:

  A systems administrator configured a new kernel module, but it stopped working after reboot. Which of the following will allow the systems administrator to check for module problems during server startup?

  A. lsmod

  B. modprobe

  C. modinfo

  D. dmesg

  Correct Answer: C

  Reference: https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/6/html/ deployment_guide/sec-displaying_information_about_a_module

• Question 298:

  A Linux system is running normally when the systems administrator receives an alert that one application spawned many processes. The application is consuming a lot of memory, and it will soon cause the machine to become unresponsive. Which of the following commands will stop each application process?

  A. kill `pidof application`

  B. killall application

  C. kill -9 `ps -aux | grep application`

  D. pkill -9 application

  Correct Answer: B

  Reference: https://www.tecmint.com/how-to-kill-a-process-in-linux/

• Question 299:

  A server is almost out of free memory and is becoming unresponsive. Which of the following sets of commands will BEST mitigate the issue?

  A. free, fack, partprobe

  B. lsof, lvcreate, mdadm

  C. df, du, rmmod

  D. fdisk, mkswap, swapon -a

  Correct Answer: D

• Question 300:

  A Linux administrator is using a public cloud provider to host servers for a company's website. Using the provider's tools, the administrator wrote a JSON file to define how to deploy the servers. Which of the following techniques did the administrator use?

  A. Infrastructure as code

  B. Build automation

  C. Platform as a service

  D. Automated configuration

  Correct Answer: B

  Reference: https://cloud.google.com/cloud-build/docs/build-config